Vehicle-wheel



T' C1 DOBBINSI VEHICLE WHEEL.

APPLICATION man AuG.22.191e aeNEwn APR. n. 1919.

1,304,1 65. Patented May 20, 1919.

TIMOTHY C. DOBBINS, OF HUNTINGTON CALIFORNIA.

VEHICLE-WHEEL.

Speccation of Letters Patent.

Patented May 2o, 1era Application med August 22, 191e, serial No. 116,221. Renewed apra-14', 1919. serial No. 290,072.

To all whom z't may concern Be it known that I, TIMOTHY C. DoBBrNs, a citizen of the United States, and resident of Huntington Park, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Vehicle-Wheels, of which the following is a specification, reference being had therein to the` accompanying drawing. The object of this invention is to provide a wheel havinga novel rim which may be vreadily attached and detached. The devices are shown as embodied in or applied to a wheel f peculiar construction not herein.

claimed per se.

In the accompanying drawings, Figure 1 is a side elevation of a vportion of a wheel provided with the novel devices. Fig. 2 is a radial section of theouter'portion of the Wheel.` L

Fig. 3 is a sectionon the line 3 3, Fig. 1. Fig. 4.- is a view looking radially outward,

toward the rim, in the line of the section In these figures, 5 represents the hub, 6 the spokes, 7 the rim and 8 a pneumatic tire, the whole constituting a wheel center without novelty. Concentriclwith and at some distance from the center is an annular structure consisting of a l trough-like member 9 in which is mounted a tire-like structure 10 made up of gradually narrowing concentric layers of canvas united by cement, prefer-A ably saturated with rubber and vulcanized together and to a hard rubber base 11 having its inner face serrated and engaged with corresponding serrations on the member 9,

the teeth of that member all being inclined toward the medial line of the Wheel', as shown. The member 9 is centrally thickened on its inner side so that this portion is a" flattened V in cross-section, and is provided along the middlelof this thickened portion with a groove 12. Againstthe thickened portion of the member 9 lits a divided metal ring 13 having a central V-shaped projection 14 extending into the groove 12, and atV short intervals around this rim are mounted i divided at any desired number of points, 'as

segments, and bears a nut 21 by which the Wedge can be drawn between the adjacent ring ends forcing them apart and pressing the ring outward with great force against the member 9 whereby the entire structure outside the wheel center is secured in lace, yet is quickly released for remova by loosening the nuts 21 and the wedges 18. The wheel relies for resiliency wholly upon the tire 8, and the canvas mass 10 is em ployed to avoid noise and deformation of the member 9 by impact upon stones and the like. Cemented layers of canvas secured to a hard rubber base lin the trough-like member 9 is a very desirable structure which serves the purpose excellently and may 'be 4 made a thick body, as shown, without danger ter, said rim and ringY being adapted to mutually engage and form a rigid unit when the -ring is forcibly expanded.

'2. The combination with a wheel center and a non-expansible concentric wheel rim spaced from -the center,- of an intermediate ring transversely divided into slightly separated segments adapted to engage and disen-f gage the -rim by radial movement and prov1 ed between the ends ofthe several segments with an annular series of forkedprojections normally in detachable sliding engagement with the center and holding the segments in the plane thereof, and means for forcing the segments apart; whereby the seg-A ments may at will form a rigid whole with the. i'ini, oi. ieienSe the fini.. oi' be removed, with the forked projections, from the. center und rim.

3. r`he eonihinution with u highly resilient wheel center, of zt ring encircling the @en 'ter and divided. into segments having trans- Yeif; ways on their ndjeeent ends, :i iiin encingiing Suid ring, Wedges `fitting in said Ways, and nuts arranged to force the advance of the wedges in said Ways; seid iing and rim being adapted to engage and seek the saine plane as the ring expands under action of the wedges.

ln testimony whereof I hereunto affix in v signature.

TTMOTHY C. DOBBNS. 

